The correct option is B Chandragupta II
A detailed account of the reign of Chandragupta II, was presented by Chinese traveller Fa-hien who visited India. Fa-hien a Chinese Buddhist, was one of the pilgrims who visited India during the reign of the Gupta emperor Chandragupta II. He started his journey from China in 399 and reached India in 405. According to him, the Gupta Empire was a prosperous period. Chandragupta II was the second ruler of the dynasty to bear the name "Chandragupta", the first being his grandfather Chandragupta I. The legendary figure of Vikramaditya is based on Chandragupta II.